<template>
  <div class="recommend">
    <scroll ref="scroll" class="recommend-content" :data="discList">
      <div>
        <div v-if="recommends.length" class="slider-wrapper">
          <slider>
            <div v-for = "item in recommends" :key="item.id">
              <a :href="item.linkUrl">
                <img class="needsclick" @load="loadImage" :src="item.picUrl">
              </a>
            </div>
          </slider>
        </div>
        <div class="recommend-list">
          <h1 class="list-title">热门歌单推荐</h1>
          <ul>
            <li v-for = "item in discList" class="item" :key="item.dissid">
              <div class="icon">
                <img width="60" height="60" v-lazy="item.imgurl">
              </div>
              <div class="text">
                <h2 class="name">{{item.creator.name}}</h2>
                <p class="desc">{{item.dissname}}</p>
              </div>
            </li>
          </ul>
        </div>
      </div>
      <div class="loading-container" v-show="!discList.length">
        <loading></loading>
      </div>
    </scroll>
  </div>
</template>
<script type="text/ecmascript-6">
// 采用better-scroll方法时需要确保滑动区域内的dom全部加载完成，即确保高度完全被撑起了
import Scroll from 'base/scroll/scroll'
import Slider from 'base/slider/slider'
import Loading from 'base/loading/loading'
import { getRecommend, getDiscList } from 'api/recommend'
import { ERR_OK } from 'api/config'
export default {
  components: {
    Slider,
    Scroll,
    Loading
  },
  data () {
    return {
      recommends: [],
      discList: []
    }
  },
  created: function () {
    this._getRecommend()
    this._getDiscList()
  },
  methods: {
    _getRecommend () {
      getRecommend()
        .then((res) => {
          if (res.code === ERR_OK) {
            this.recommends = res.data.slider
          }
        })
        .catch((err) => {
          console.log(err)
        })
    },
    _getDiscList () {
      getDiscList()
        .then((res) => {
          if (res.code === ERR_OK) {
            this.discList = res.data.list
          }
        })
        .catch((err) => {
          console.log(err)
        })
    },
    loadImage () {
      if (!this.checkLoaded) {
        this.$refs.scroll.refresh()
        this.checkLoaded = true
      }
    }
  }
}
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
  @import "~common/stylus/variable"

  .recommend
    position fixed
    width 100%
    top 88px
    bottom 0
    .recommend-content
      height 100%
      overflow hidden
      .slider-wrapper
        position relative
        width 100%
        overflow hidden
      .recommend-list
        .list-title
          height 65px
          line-height 65px
          text-align center
          font-size $font-size-medium
          color $color-theme
        .item
          display flex
          box-sizing border-box
          align-items center
          padding 0 20px 20px 20px
          .icon
            flex 0 0 60px
            width 60px
            padding-right 20px
          .text
            display flex
            flex-direction column
            justify-content center
            flex 1
            line-height 20px
            overflow hidden
            font-size $font-size-medium
            .name
              margin-bottom 10px
              color $color-text
            .desc
              color $color-text-d
      .loading-container
        position absolute
        width 100%
        top 50%
        transform translateY(-50%)
</style>
